1,720,953 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Physical and Mechanical Characterization of Ti50Ni50-XFeX Shape Memory Alloy Fabricated by Powder Metallurgy Process
No full textShape memory alloys (SMAs) shows crystal structure transformation at low temperature. Due to this reason, the metals change their shape without any microstructural effect. Also, SMAs exhibit superior properties such as shape memory effects (SMEs) and superelasticity (SE), along with higher biocompatibility, higher corrosion resistance, low thermal conductivity, higher abrasion resistance, better fatigue resistance, and better processability. NiTi-based alloys with shape memory effect are used in different areas such as electronics, medicine, aerospace, robotics, and structural applications. Various techniques are used to alter the properties of binary NiTi alloys by adding different alloying elements. Compared to the binary NiTi alloy, the ternary TiNiFe alloy generally shows low temperature hysteresis, higher toughness, good mechanical properties, higher corrosion and wear resistance, radiopacity, and lower martensitic phase transformation temperatures. TiNiFe alloys are mostly used in aeronautical (e.g., heat-shrinkable hydraulic couplings and sleeves), couplings in jet fighters/aircraft and other engineering applications (like hydrogen storage materials and pipe couplings etc.) and actuator applications. In the present study, ternary Ti50Ni(50−X)FeX alloy (where X: 0, 2, 4, 6, 8, and 10 in at.%) has been prepared by the powder metallurgy method (mixing and with or without mechanical milling). To study the effect of the variation of Fe percentage, sintering temperature and various mixing methods on the microstructure and mechanical properties of TiNiFe alloy are investigated. The characterization of milled powders is carried out by High Temperature Differential Scanning Calorimetry (HTDSC), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy Dispersive Spectroscopy (EDS) for thermal, phase and morphology analysis. Then the milled and unmilled powders were cold compacted at 600MPa pressure and sintered by conventional pressure-less sintering using Ar gas at 1050-1200 °C for 4 hours in a tubular furnace. Also, unmilled mixed powder was sintered in a SPS unit at 1000ºC for 5 min holding time and 50 MPa applied pressure at a heating rate of 50 ºC/min. The phase evolution, microstructure, shape memory effect, and physical and mechanical properties of the prepared alloy have been carried out using XRD, SEM, EDS, density, porosity, hardness, compression, indentation technique (shape memory effect), nanoindentation, and wear test. In investigation through milled routes, the 4 at.% Fe sample sintered at 1200ºC shows higher density, lower porosity, and a higher hardness value but higher compressive and yield strength values of the 4 at.% Fe sample sintered at 1150ºC were observed compared to other compositions and other sintered samples. Both 6 at.% Fe sample sintered at 1050ºC and 1200ºC shows a higher shape memory effect of 3.51% and 3.37%, respectively, than other compositions and other sintered samples. After heat treatment process, the 4 at.% Fe heat-treated sample shows higher relative density, lower porosity, higher hardness, and higher elastic modulus due to the presence of more amount secondary phases compared to other samples. But, the 10 at.% Fe heat-treated sample shows a higher shape memory effect, higher elastic recovery and higher COF value because of the more amount hard NiTi (B2) phase present than other samples. The abrasive and adhesive wear mechanisms are seen on the worn surface of the wear samples. Here, the observed NiTi phase and densification favoured the shape memory behaviours of the sample. In unmilled routes investigation, the 8 at.% Fe sample sintered at 1150ºC shows higher relative density, lower porosity, higher hardness, higher elastic modulus, and higher wear resistance due to the presence of more amount secondary phases. Still, the 2 at.%Fe sample sintered at 1050ºC shows a higher shape memory effect and elastic recovery value compared to other compositions and other sintering temperature samples because of more amount of NiTi (B19’) phase present. The overall wear mechanism of the FESEM analysis of the worn surfaces sample is mainly abrasive with minor adhesive in nature. Also, the delamination wear mechanism is seen on the worn surface of the wear samples. Again, the microstructural and phase analysis of the SPS sample includes the NiTiFe phase along with βTi, Fe2Ti and Ni-rich phases. The 8 at.%Fe sample shows higher relative density, lower porosity, higher hardness and higher wear resistance due to the presence of more amount secondary phases compared to other samples. The 8 at.%Fe sample shows a higher shape memory effect because more amounts of NiTi (B19’) martensitic phase are present compared to other samples
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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